panic: ffs_freefile: freeing free inode
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*149770 67938 0 0x2 0 0K syz-executor
219010 84529 0 0x2 0 1 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f
ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7efd672098b0, count: 4
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb{0}>
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: ffs_freefile: freeing free inode
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f
ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7efd672098b0, count: -11
ddb{0}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a2ea150
rbx 0xffffffff83953e07 cpu_info_full_primary+0x2e07
rdx 0
rcx 0xffff8000ffffd9f8
rax 0xffffffff83952ff0 cpu_info_full_primary+0x1ff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x60717f87f0084ef7
r11 0x31566b2707191d0c
r12 0xffffffff83953c08 cpu_info_full_primary+0x2c08
r13 0
r14 0
r15 0x1
rip 0xffffffff823a8d45 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a2ea140
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=149770 pid=67938 tcnt=1 stat=onproc
flags process=2<EXEC> proc=0
runpri=17, usrpri=50, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff8000ffffcf98,0xffff8000ffffc548
process=0xffff8000ffff1820 user=0xffff80002a2e5000, vmspace=0xfffffd800b0633d0
estcpu=36, cpticks=10, pctcpu=0.7, user=0, sys=10, intr=0
ddb{0}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
58420 298737 65060 0 2 0xc80 syz-executor
58420 99983 65060 0 3 0x4000000 clonelk syz-executor
58420 114492 65060 0 3 0x4000080 fsleep syz-executor
95324 439116 84529 0 3 0x80 nanoslp syz-executor
95324 194735 84529 0 3 0x4000080 nanoslp syz-executor
95324 236812 84529 0 3 0x4000080 fsleep syz-executor
20688 511729 73494 0 2 0xc80 syz-executor
20688 482157 73494 0 3 0x4000080 fsleep syz-executor
20688 124712 73494 0 3 0x4000080 fsleep syz-executor
20688 463303 73494 0 3 0x4000080 ttyin syz-executor
65060 318244 78802 0 3 0x82 nanoslp syz-executor
73494 149306 78802 0 3 0x82 nanoslp syz-executor
*67938 149770 78802 0 7 0x2 syz-executor
84529 219010 78802 0 7 0x2 syz-executor
78802 306398 79163 0 3 0x82 wait syz-executor
79163 286705 83800 0 3 0x10008a sigsusp ksh
83800 520557 49985 0 3 0x98 kqread sshd-session
49985 445485 27627 0 3 0x92 kqread sshd-session
1207 118033 1 0 3 0x100083 ttyin getty
27627 308262 1 0 3 0x88 kqread sshd
35233 213059 23167 74 3 0x1100092 bpf pflogd
23167 243678 1 0 3 0x80 sbwait pflogd
27532 503530 54081 73 3 0x1100090 kqread syslogd
54081 508085 1 0 3 0x100082 sbwait syslogd
41923 132244 1 0 3 0x100080 kqread resolvd
42947 166495 52605 77 3 0x100092 kqread dhcpleased
77981 490777 52605 77 3 0x100092 kqread dhcpleased
52605 91370 1 0 3 0x80 kqread dhcpleased
70437 471451 0 0 3 0x14200 bored smr
61230 119666 0 0 3 0x14200 pgzero zerothread
71171 73296 0 0 3 0x14200 aiodoned aiodoned
92819 434126 0 0 3 0x14200 syncer update
3201 436785 0 0 3 0x14200 cleaner cleaner
77203 137697 0 0 3 0x14200 reaper reaper
90674 2291 0 0 3 0x14200 pgdaemon pagedaemon
35046 520207 0 0 3 0x14200 bored viomb
58147 18552 0 0 3 0x40014200 acpi0 acpi0
80114 264916 0 0 3 0x40014200 idle1
36643 94840 0 0 3 0x14200 bored softnet1
68500 175216 0 0 3 0x14200 bored softnet0
69626 219602 0 0 3 0x14200 bored systqmp
46090 212199 0 0 3 0x14200 bored systq
37148 24184 0 0 3 0x14200 tmoslp softclockmp
22836 284192 0 0 2 0x40014200 softclock
84228 328170 0 0 3 0x40014200 idle0
1 141367 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{0}> show all locks
Process 20688 (syz-executor) thread 0xffff80003c3dc020 (463303)
exclusive rrwlock inode r = 0 (0xfffffd806c7e21e8)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 spec_open+0x2f2 sys/kern/spec_vnops.c:151
#6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#7 vn_open+0x7a5 sys/kern/vfs_vnops.c:183
#8 vndioctl+0xc43 sys/dev/vnd.c:458
#9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#13 Xsyscall+0x128
Process 67938 (syz-executor) thread 0xffff8000ffffd9f8 (149770)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a75800)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 biowait+0xc6 sys/kern/vfs_bio.c:1242
#4 ffs_freefile+0xbe ffs_cgread sys/ufs/ffs/ffs_alloc.c:850 [inline]
#4 ffs_freefile+0xbe sys/ufs/ffs/ffs_alloc.c:1377
#5 ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
#6 ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94
#7 VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
#8 vput+0xe5 sys/kern/vfs_subr.c:789
#9 VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
#10 dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
#11 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#11 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#12 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80737e8b30)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#11 namei+0x7ca sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806e74f360)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4 vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5 vget+0x2a2 sys/kern/vfs_subr.c:686
#6 cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567
#10 namei+0x7ca sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887
#12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#13 Xsyscall+0x128
ddb{0}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11060 12085K 12242K 166960K 12261 0
pcb 17 12K 12K 166960K 24 0
rtable 238 7K 7K 166960K 372 0
pf 34 17K 24K 166960K 55 0
ifaddr 43 7K 7K 166960K 47 0
ifgroup 55 2K 2K 166960K 57 0
sysctl 1 1K 9K 166960K 6 0
counters 70 37K 37K 166960K 72 0
ioctlops 0 0K 4K 166960K 1498 0
iov 0 0K 0K 166960K 1 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1294 81K 82K 166960K 1392 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 9K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 3 0K 0K 166960K 4 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1692 195K 286K 166960K 12470 0
file desc 13 45K 93K 166960K 185 0
proc 70 115K 180K 166960K 553 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 3 0
in_multi 99 7K 7K 166960K 100 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 4 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 49 228K 228K 166960K 49 0
exec 0 0K 1K 166960K 394 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 205 150K 160K 166960K 3609 0
UVM aobj 6 2K 2K 166960K 7 0
pinsyscall 38 76K 102K 166960K 1362 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 2 0
NDP 28 2K 2K 166960K 29 0
temp 35 9070K 9136K 166960K 5510 0
kqueue 14 22K 22K 166960K 24 0
SYN cache 2 16K 16K 166960K 2 0
ddb{0}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 26 0 0 1 0 1 1 0 8 0
rtpcb 120 39 0 35 1 0 1 1 0 8 0
rtentry 176 115 0 5 6 0 6 6 0 8 0
unpcb 144 54 0 37 1 0 1 1 0 8 0
syncache 336 3 0 3 1 0 1 1 0 8 1
tcpcb 736 17 0 12 1 0 1 1 0 8 0
arp 136 19 0 2 1 0 1 1 0 8 0
inpcb 328 88 0 79 2 0 2 2 0 8 1
nd6 152 25 0 0 1 0 1 1 0 8 0
pkpcb 40 1 0 1 1 0 1 1 0 8 1
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1192 1 0 1 1 0 1 1 0 8 1
pfosfp 40 1428 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1428 0 714 21 0 21 21 0 8 0
pfrktable 1344 2 0 2 1 0 1 1 0 8 1
pfanchor 1288 2 0 0 1 0 1 1 0 8 0
pfstitem 24 18 0 0 1 0 1 1 0 8 0
pfstkey 128 18 0 0 1 0 1 1 0 8 0
pfstate 448 18 0 0 2 0 2 2 0 8 0
pfrule 1360 21 0 16 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 460 0 4 29 0 29 29 0 8 0
art_table 40 461 0 4 5 0 5 5 0 8 0
art_node 32 115 0 15 1 0 1 1 0 8 0
semapl 112 1 0 0 1 0 1 1 0 8 0
shmpl 112 4 0 1 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1647 0 179 93 0 93 93 0 8 0
ffsino 296 1651 0 183 114 0 114 114 0 8 0
nchpl 144 1911 0 208 64 0 64 64 0 8 0
vnodes 216 1755 0 0 98 0 98 98 0 8 0
namei 1024 5885 0 5885 2 0 2 2 0 8 2
percpumem 16 51 0 1 1 0 1 1 0 8 0
kstatmem 264 28 0 2 2 0 2 2 0 8 0
scxspl 216 6623 0 6623 4 2 2 3 1 8 2
plimitpl 152 32 0 14 1 0 1 1 0 8 0
sigapl 424 509 0 466 7 0 7 7 0 8 1
knotepl 120 286 0 0 9 0 9 9 0 8 0
kqueuepl 224 25 0 15 1 0 1 1 0 8 0
pipepl 344 127 0 100 3 0 3 3 0 8 0
fdescpl 528 493 0 466 3 0 3 3 0 8 0
filepl 160 1824 0 1609 10 0 10 10 0 8 0
lockfpl 104 12 0 10 1 0 1 1 0 8 0
lockfspl 48 7 0 5 1 0 1 1 0 8 0
sessionpl 144 23 0 14 1 0 1 1 0 8 0
pgrppl 48 33 0 16 1 0 1 1 0 8 0
ucredpl 104 117 0 103 1 0 1 1 0 8 0
zombiepl 144 470 0 466 1 0 1 1 0 8 0
processpl 1232 509 0 466 5 0 5 5 0 8 1
procpl 664 599 0 549 6 0 6 6 0 8 0
sockpl 752 183 0 153 4 0 4 4 0 8 0
mcl64k 65536 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 116 0 0 15 0 15 15 0 8 0
mcl2k 2048 13 0 0 2 0 2 2 0 8 0
mtagpl 96 1 0 0 1 0 1 1 0 8 0
mbufpl 256 165 0 0 11 0 11 11 0 8 0
bufpl 280 2536 0 106 174 0 174 174 0 8 0
anonpl 32 5719 0 0 47 0 47 47 0 246 0
amapchunkpl 152 10311 0 9933 25 0 25 25 0 158 5
amappl16 200 2114 0 2079 5 0 5 5 0 8 2
amappl15 192 4 0 4 1 1 0 1 0 8 0
amappl14 184 440 0 439 1 0 1 1 0 8 0
amappl13 176 124 0 112 1 0 1 1 0 8 0
amappl12 168 769 0 743 2 0 2 2 0 8 0
amappl11 160 7 0 7 1 0 1 1 0 8 1
amappl10 152 68 0 54 1 0 1 1 0 8 0
amappl9 144 259 0 259 1 0 1 1 0 8 1
amappl8 136 109 0 107 1 0 1 1 0 8 0
amappl7 128 151 0 137 1 0 1 1 0 8 0
amappl6 120 162 0 160 1 0 1 1 0 8 0
amappl5 112 95 0 85 1 0 1 1 0 8 0
amappl4 104 308 0 287 1 0 1 1 0 8 0
amappl3 96 1837 0 1749 3 0 3 3 0 8 0
amappl2 88 541 0 481 2 0 2 2 0 8 0
amappl1 80 9585 0 8995 15 0 15 15 0 8 0
amappl 88 2863 0 2728 4 0 4 4 0 92 0
uvmvnodes 80 99 0 0 3 0 3 3 0 8 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma1024 1024 1 0 0 1 0 1 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma128 128 253 0 253 1 1 0 1 0 8 0
dma64 64 6 0 6 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 18 0 17 1 0 1 1 0 8 0
aobjpl 72 6 0 1 1 0 1 1 0 8 0
uaddrrnd 24 493 0 466 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 493 0 466 1 0 1 1 0 8 0
vmmpekpl 168 5816 0 5772 2 0 2 2 0 8 0
vmmpepl 168 39787 0 38084 87 0 87 87 0 357 0
vmsppl 488 492 0 466 5 0 5 5 0 8 0
rwobjpl 80 14579 0 13573 24 0 24 24 0 8 0
pdppl 4096 993 0 932 99 14 85 85 0 8 24
pvpl 32 12358 0 0 100 0 100 100 0 265 0
pmappl 256 492 0 466 3 0 3 3 0 8 0
extentpl 40 45 0 27 1 0 1 1 0 8 0
phpool 112 269 0 17 8 0 8 8 0 8 0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83425f9b) at panic+0x1e5 sys/kern/subr_prf.c:198
ffs_freefile(fffffd80737e8a90,665d,2000) at ffs_freefile+0x45f
ffs_inode_free(fffffd80737e8a90,665d,2000) at ffs_inode_free+0x44 sys/ufs/ffs/ffs_alloc.c:1355
ufs_inactive(ffff80002a2ea350) at ufs_inactive+0x29c sys/ufs/ufs/ufs_inode.c:94
VOP_INACTIVE(fffffd805fedd2b0,ffff8000ffffd9f8) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498
vput(fffffd805fedd2b0) at vput+0xe5 sys/kern/vfs_subr.c:789
VOP_REMOVE(fffffd805fedd7c0,fffffd805fedd2b0,ffff80002a2ea4b8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336
dounlinkat(ffff8000ffffd9f8,ffffff9c,7efd67209400,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923
syscall(ffff80002a2ea630) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2ea630) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7efd672098b0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83a75000) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a75000) at __mp_lock+0x192 sys/kern/kern_lock.c:173
syscall(ffff80002a2cc5e0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80002a2cc5e0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7da995e1a2b0, count: 9
ddb{1}> trace
x86_ipi_db(ffff8000299bdff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83a75000) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a75000) at __mp_lock+0x192 sys/kern/kern_lock.c:173
syscall(ffff80002a2cc5e0) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80002a2cc5e0) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7da995e1a2b0, count: -6